A Novel Mid-and-low Temperature Solar-hybrid Gas Turbine Combined Cycle Using Perovskite-chemical Looping Combustion

In this paper, we put forward a new method of mid-and-low temperature solar-hybrid perovskite-chemical looping combustion (CLC), and combined this new method with a combined cycle. In this proposed method, the mid-temperature solar heat is used to drive the LaCu.1Ni0.9O3-chemical looping combustion of methane. This CLC system absorbs solar heat (350℃) to drive the reduction reaction, and the high temperature ue gas is input to the combined cycle. This method upgrades the lower energy level of the mid-temperature solar heat to higher energy level of chemical energy and realizes the reduction of exergy destruction and inherent CO2 separation. As a result, when the turbine inlet temperature is 1200℃, the exergy efficiency is raised to 61.4% and net solar-to-electricity efficiency is expected to reach 31.9%. Our study will provide a promising approach of utilizing mid-temperature solar heat with high net solar-to-electricity efficiency compare with a traditional methane combined cycle. © 2019, Science Press. All right reserved.